#!/bin/sh

# This script wraps docker-php-ext-install, properly configuring the system.
#
# Copyright (c) Michele Locati, 2018
#
# Source: https://github.com/mlocati/docker-php-extension-installer
#
# License: MIT - see https://github.com/mlocati/docker-php-extension-installer/blob/master/LICENSE

# Let's set a sane environment
set -o errexit
set -o nounset

# Reset the Internal Field Separator
resetIFS() {
    IFS='
'
}

# Set these variables:
# - DISTRO containing distribution name (eg 'alpine', 'debian')
# - DISTO_VERSION containing distribution name and its version(eg 'alpine@3.10', 'debian@9')
setDistro() {
    if ! test -r /etc/os-release; then
        printf 'The file /etc/os-release is not readable\n' >&2
        exit 1
    fi
    DISTRO="$(cat /etc/os-release | grep -E ^ID= | cut -d = -f 2)"
    DISTRO_VERSION="$(printf '%s@%s' $DISTRO $(cat /etc/os-release | grep -E ^VERSION_ID= | cut -d = -f 2 | cut -d '"' -f 2 | cut -d . -f 1,2))"
}

# Set the PHP_MAJMIN_VERSION variable containing the PHP Major-Minor version as an integer value, in format MMmm (example: 506 for PHP 5.6.15)
setPHPMajorMinor() {
    PHP_MAJMIN_VERSION=$(php-config --version | awk -F. '{print $1*100+$2}')
}

# Get the normalized list of already installed PHP modules
#
# Output:
#   Space-separated list of module handles
getPHPInstalledModules() {
    getPHPInstalledModules_result=''
    IFS='
'
    for getPHPInstalledModules_module in $(php -m); do
        getPHPInstalledModules_moduleNormalized=''
        case "$getPHPInstalledModules_module" in
            \[PHP\ Modules\]) ;;
            \[Zend\ Modules\])
                break
                ;;
            Core | PDO | PDO_* | Phar | Reflection | SimpleXML | SPL | SQLite | Xdebug)
                getPHPInstalledModules_moduleNormalized=$(LC_CTYPE=C printf '%s' "$getPHPInstalledModules_module" | tr '[:upper:]' '[:lower:]')
                ;;
            Zend\ OPcache)
                getPHPInstalledModules_moduleNormalized='opcache'
                ;;
            *\ * | *A* | *B* | *C* | *D* | *E* | *F* | *G* | *H* | *I* | *J* | *K* | *L* | *M* | *N* | *O* | *P* | *Q* | *R* | *S* | *T* | *U* | *V* | *W* | *X* | *Y* | *Z*)
                printf '### WARNING Unrecognized module name: %s ###\n' "$getPHPInstalledModules_module" >&2
                ;;
            *)
                getPHPInstalledModules_moduleNormalized="$getPHPInstalledModules_module"
                ;;
        esac
        if test -n "$getPHPInstalledModules_moduleNormalized"; then
            if ! stringInList "$getPHPInstalledModules_moduleNormalized" "$getPHPInstalledModules_result"; then
                getPHPInstalledModules_result="$getPHPInstalledModules_result $getPHPInstalledModules_moduleNormalized"
            fi
        fi
    done
    resetIFS
    printf '%s' "${getPHPInstalledModules_result# }"
}

# Get the handles of the modules to be installed
#
# Arguments:
#   $@: all module handles
#
# Set:
#   PHP_MODULES_TO_INSTALL
#
# Output:
#   Nothing
processCommandArguments() {
    processCommandArguments_alreadyInstalled="$(getPHPInstalledModules)"
    processCommandArguments_endArgs=0
    PHP_MODULES_TO_INSTALL=''
    while :; do
        if test $# -lt 1; then
            break
        fi
        processCommandArguments_skip=0
        if test $processCommandArguments_endArgs -eq 0; then
            case "$1" in
                --cleanup)
                    printf '### WARNING the %s option is deprecated (we always cleanup everything) ###\n' "$1" >&2
                    processCommandArguments_skip=1
                    ;;
                --)
                    processCommandArguments_skip=1
                    processCommandArguments_endArgs=1
                    ;;
                -*)
                    printf 'Unrecognized option: %s\n' "$1" >&2
                    exit 1
                    ;;
            esac
        fi
        if test $processCommandArguments_skip -eq 0; then
            case "$1" in
                pecl_http)
                    processCommandArguments_name='http'
                    ;;
                *)
                    processCommandArguments_name=$1
                    ;;
            esac
            if stringInList "$processCommandArguments_name" "$PHP_MODULES_TO_INSTALL"; then
                printf '### WARNING Duplicated module name specified: %s ###\n' "$processCommandArguments_name" >&2
            elif stringInList "$processCommandArguments_name" "$processCommandArguments_alreadyInstalled"; then
                printf '### WARNING Module already installed: %s ###\n' "$processCommandArguments_name" >&2
            else
                PHP_MODULES_TO_INSTALL="$PHP_MODULES_TO_INSTALL $processCommandArguments_name"
            fi
        fi
        shift
    done
    PHP_MODULES_TO_INSTALL="${PHP_MODULES_TO_INSTALL# }"
}

# Sort the modules to be installed, in order to fix dependencies
#
# Update:
#   PHP_MODULES_TO_INSTALL
#
# Output:
#   Nothing
sortModulesToInstall() {
    if stringInList 'igbinary' "$PHP_MODULES_TO_INSTALL"; then
        PHP_MODULES_TO_INSTALL="$(removeStringFromList 'igbinary' "$PHP_MODULES_TO_INSTALL")"
        if test -z "$PHP_MODULES_TO_INSTALL"; then
            PHP_MODULES_TO_INSTALL='igbinary'
        else
            PHP_MODULES_TO_INSTALL="igbinary $PHP_MODULES_TO_INSTALL"
        fi
    fi
    if stringInList 'msgpack' "$PHP_MODULES_TO_INSTALL"; then
        PHP_MODULES_TO_INSTALL="$(removeStringFromList 'msgpack' "$PHP_MODULES_TO_INSTALL")"
        if test -z "$PHP_MODULES_TO_INSTALL"; then
            PHP_MODULES_TO_INSTALL='msgpack'
        else
            PHP_MODULES_TO_INSTALL="msgpack $PHP_MODULES_TO_INSTALL"
        fi
    fi
    if stringInList 'http' "$PHP_MODULES_TO_INSTALL"; then
        PHP_MODULES_TO_INSTALL="$(removeStringFromList 'http' "$PHP_MODULES_TO_INSTALL")"
        sortModulesToInstall_alreadyInstalled="$(getPHPInstalledModules)"
        if ! stringInList 'propro' "$PHP_MODULES_TO_INSTALL" && ! stringInList 'propro' "$sortModulesToInstall_alreadyInstalled"; then
            PHP_MODULES_TO_INSTALL="$PHP_MODULES_TO_INSTALL propro"
        fi
        if ! stringInList 'raphf' "$PHP_MODULES_TO_INSTALL" && ! stringInList 'raphf' "$sortModulesToInstall_alreadyInstalled"; then
            PHP_MODULES_TO_INSTALL="$PHP_MODULES_TO_INSTALL raphf"
        fi
        PHP_MODULES_TO_INSTALL="$PHP_MODULES_TO_INSTALL http"
    fi
}

# Get the required APT/APK packages for a specific PHP version and for the list of module handles
#
# Arguments:
#   $1: the numeric PHP Major-Minor version
#   $@: the PHP module handles
#
# Set:
#   PACKAGES_PERSISTENT
#   PACKAGES_VOLATILE
#   PACKAGES_PREVIOUS
buildRequiredPackageLists() {
    buildRequiredPackageLists_persistent=''
    buildRequiredPackageLists_volatile=''
    buildRequiredPackageLists_phpv=$1
    case "$DISTRO" in
        alpine)
            apk update
            ;;
    esac
    case "$DISTRO_VERSION" in
        alpine@*)
            buildRequiredPackageLists_volatile="$PHPIZE_DEPS"
            if test -z "$(apk info 2>/dev/null | grep -E ^libssl)"; then
                buildRequiredPackageLists_libssl='libssl1.0'
            elif test -z "$(apk info 2>/dev/null | grep -E '^libressl.*-libtls')"; then
                buildRequiredPackageLists_libssl=$(apk search -q libressl*-libtls)
            else
                buildRequiredPackageLists_libssl=''
            fi
            ;;
        debian@9)
            buildRequiredPackageLists_libssldev='libssl1.0-dev'
            ;;
        debian@*)
            buildRequiredPackageLists_libssldev='libssl([0-9]+(\.[0-9]+)*)?-dev$'
            ;;
    esac
    while :; do
        if test $# -lt 2; then
            break
        fi
        shift
        case "$1@$DISTRO" in
            amqp@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent rabbitmq-c"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile rabbitmq-c-dev"
                ;;
            amqp@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent librabbitmq[0-9]"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile librabbitmq-dev libssh-dev"
                ;;
            bz2@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libbz2"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile bzip2-dev"
                ;;
            bz2@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libbz2-dev"
                ;;
            cmark@alpine)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile cmake"
                ;;
            cmark@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile cmake"
                ;;
            decimal@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmpdec2"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmpdec-dev"
                ;;
            enchant@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent enchant"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile enchant-dev"
                ;;
            enchant@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libenchant1c2a"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libenchant-dev"
                ;;
            ffi@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libffi"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libffi-dev"
                ;;
            ffi@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libffi-dev"
                ;;
            gd@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent freetype libjpeg-turbo libpng libxpm"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetype-dev libjpeg-turbo-dev libpng-dev libxpm-dev"
                if test $buildRequiredPackageLists_phpv -le 506; then
                    buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libvpx"
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libvpx-dev"
                else
                    buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libwebp"
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libwebp-dev"
                fi
                ;;
            gd@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libfreetype6 libjpeg62-turbo libpng[0-9]+-[0-9]+$ libxpm4"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libfreetype6-dev libjpeg62-turbo-dev libpng-dev libxpm-dev"
                if test $buildRequiredPackageLists_phpv -le 506; then
                    buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libvpx[0-9]+$"
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libvpx-dev"
                else
                    buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libwebp[0-9]+$"
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libwebp-dev"
                fi
                ;;
            gettext@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libintl"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile gettext-dev"
                ;;
            gmagick@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent graphicsmagick"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile graphicsmagick-dev libtool"
                ;;
            gmagick@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libgraphicsmagick(-q16-)?[0-9]*$"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libgraphicsmagick1-dev"
                ;;
            gmp@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent gmp"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile gmp-dev"
                ;;
            gmp@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libgmp-dev"
                ;;
            grpc@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libstdc++"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile zlib-dev linux-headers"
                ;;
            grpc@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile zlib1g-dev"
                ;;
            http@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libevent"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile zlib-dev curl-dev libevent-dev"
                if test $buildRequiredPackageLists_phpv -le 506; then
                    buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libidn"
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libidn-dev"
                else
                    buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent icu-libs libidn"
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile icu-dev libidn-dev"
                fi
                ;;
            http@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libcurl3-gnutls libevent[0-9\.\-]*$"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile zlib1g-dev libgnutls28-dev libcurl4-gnutls-dev libevent-dev"
                if test $buildRequiredPackageLists_phpv -le 506; then
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libidn1[0-9+]-dev$"
                else
                    buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libicu[0-9]+$ libidn2-[0-9+]$"
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libicu-dev libidn2-[0-9+]-dev$"
                fi
                ;;
            imagick@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent imagemagick"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile imagemagick-dev"
                ;;
            imagick@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmagickwand-6.q16-[0-9]+$"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmagickwand-dev"
                ;;
            imap@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent c-client $buildRequiredPackageLists_libssl"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile krb5-dev imap-dev libressl-dev"
                ;;
            imap@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libc-client2007e"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libkrb5-dev"
                case "$DISTRO_VERSION" in
                    debian@9)
                        buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $buildRequiredPackageLists_libssldev comerr-dev krb5-multidev libc-client2007e libgssrpc4 libkadm5clnt-mit11 libkadm5srv-mit11 libkdb5-8 libpam0g-dev libssl-doc mlock"
                        ;;
                    *)
                        buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libc-client-dev"
                        ;;
                esac
                ;;
            interbase@alpine)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile icu-dev ncurses-dev"
                ;;
            interbase@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libfbclient2"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile firebird-dev libib-util"
                ;;
            intl@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent icu-libs"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile icu-dev"
                ;;
            intl@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libicu[0-9]+$"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libicu-dev"
                ;;
            ldap@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libldap"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile openldap-dev"
                ;;
            ldap@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libldap2-dev"
                ;;
            mcrypt@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmcrypt"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmcrypt-dev"
                ;;
            mcrypt@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmcrypt4"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmcrypt-dev"
                ;;
            memcache@alpine)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile zlib-dev"
                ;;
            memcache@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile zlib1g-dev"
                ;;
            memcached@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmemcached-libs"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmemcached-dev zlib-dev"
                ;;
            memcached@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmemcachedutil2"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmemcached-dev zlib1g-dev"
                ;;
            mongo@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libsasl $buildRequiredPackageLists_libssl"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libressl-dev cyrus-sasl-dev"
                ;;
            mongo@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $buildRequiredPackageLists_libssldev libsasl2-dev"
                ;;
            mongodb@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent icu-libs libsasl $buildRequiredPackageLists_libssl snappy"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile icu-dev cyrus-sasl-dev snappy-dev libressl-dev zlib-dev"
                ;;
            mongodb@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libsnappy[0-9]+(v[0-9]+)?$ libicu[0-9]+$"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libicu-dev libsasl2-dev libsnappy-dev $buildRequiredPackageLists_libssldev zlib1g-dev"
                ;;
            mssql@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent freetds"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
                ;;
            mssql@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libsybdb5"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
                ;;
            oauth@alpine)
                if test $buildRequiredPackageLists_phpv -ge 700; then
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile pcre-dev"
                fi
                ;;
            oauth@debian)
                if test $buildRequiredPackageLists_phpv -ge 700; then
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpcre3-dev"
                fi
                ;;
            odbc@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent unixodbc"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
                ;;
            odbc@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libodbc1"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
                ;;
            pdo_dblib@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent freetds"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
                ;;
            pdo_dblib@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libsybdb5"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
                ;;
            pdo_firebird@alpine)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile icu-dev ncurses-dev"
                ;;
            pdo_firebird@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libfbclient2"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile firebird-dev libib-util"
                ;;
            pdo_odbc@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent unixodbc"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
                ;;
            pdo_odbc@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libodbc1"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
                ;;
            pdo_pgsql@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent postgresql-libs"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile postgresql-dev"
                ;;
            pdo_pgsql@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libpq5"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpq-dev"
                ;;
            pdo_sqlsrv@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libstdc++ unixodbc"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
                ;;
            pdo_sqlsrv@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libodbc1 odbcinst"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
                ;;
            pgsql@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent postgresql-libs"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile postgresql-dev"
                ;;
            pgsql@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libpq5"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpq-dev"
                ;;
            pspell@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent aspell-libs"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile aspell-dev"
                ;;
            pspell@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libaspell15"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpspell-dev"
                ;;
            rdkafka@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent librdkafka"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile librdkafka-dev"
                ;;
            rdkafka@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent librdkafka\+*[0-9]*$"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile librdkafka-dev"
                ;;
            recode@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent recode"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile recode-dev"
                ;;
            recode@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent librecode0"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile librecode-dev"
                ;;
            redis@alpine)
                if test $buildRequiredPackageLists_phpv -ge 700; then
                    case "$DISTRO_VERSION" in
                        alpine@3.7)
                            buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent zstd"
                            ;;
                        *)
                            buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent zstd-libs"
                            ;;
                    esac
                    buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile zstd-dev"
                fi
                ;;
            redis@debian)
                if test $buildRequiredPackageLists_phpv -ge 700; then
                    case "$DISTRO_VERSION" in
                        debian@8)
                            ## There's no APT package for libzstd
                            ;;
                        debian@9)
                            ## libzstd is too old (available: 1.1.2, required: 1.3.0+)
                            ;;
                        *)
                            buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libzstd[0-9]*$"
                            buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libzstd-dev"
                            ;;
                    esac
                fi
                ;;
            snuffleupagus@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent pcre"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile pcre-dev"
                ;;
            snuffleupagus@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpcre3-dev"
                ;;
            snmp@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent net-snmp-libs"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile net-snmp-dev"
                ;;
            snmp@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent snmp"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libsnmp-dev"
                ;;
            soap@alpine)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
                ;;
            soap@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
                ;;
            solr@alpine)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile curl-dev libxml2-dev"
                ;;
            solr@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libcurl3-gnutls"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libcurl4-gnutls-dev libxml2-dev"
                ;;
            sqlsrv@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libstdc++ unixodbc"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
                ;;
            sqlsrv@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent unixodbc"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
                ;;
            ssh2@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libssh2"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libssh2-dev"
                ;;
            ssh2@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libssh2-1-dev"
                ;;
            sybase_ct@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent freetds"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
                ;;
            sybase_ct@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libct4"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
                ;;
            tdlib@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libstdc++ $buildRequiredPackageLists_libssl"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile git cmake gperf zlib-dev libressl-dev linux-headers readline-dev"
                ;;
            tdlib@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile git cmake gperf zlib1g-dev $buildRequiredPackageLists_libssldev"
                ;;
            tidy@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent tidyhtml-libs"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile tidyhtml-dev"
                ;;
            tidy@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libtidy5*"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libtidy-dev"
                ;;
            uuid@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libuuid"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile util-linux-dev"
                ;;
            uuid@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile uuid-dev"
                ;;
            wddx@alpine)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
                ;;
            wddx@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
                ;;
            xmlrpc@alpine)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
                ;;
            xmlrpc@debian)
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
                ;;
            xsl@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libxslt"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxslt-dev libgcrypt-dev"
                ;;
            xsl@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libxslt1.1"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxslt-dev"
                ;;
            yaml@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent yaml"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile yaml-dev"
                ;;
            yaml@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libyaml-0-2"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libyaml-dev"
                ;;
            zip@alpine)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libzip"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile cmake gnutls-dev libzip-dev libressl-dev zlib-dev"
                ;;
            zip@debian)
                buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libzip[0-9]$"
                buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile cmake gnutls-dev $buildRequiredPackageLists_libssldev libzip-dev libbz2-dev zlib1g-dev"
                case "$DISTRO_VERSION" in
                    debian@8)
                        # Debian Jessie doesn't seem to provide libmbedtls
                        ;;
                    *)
                        buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmbedtls[0-9]*$"
                        buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmbedtls-dev"
                        ;;
                esac
                ;;
        esac
    done
    PACKAGES_PERSISTENT=''
    PACKAGES_VOLATILE=''
    PACKAGES_PREVIOUS=''
    if test -z "$buildRequiredPackageLists_persistent$buildRequiredPackageLists_volatile"; then
        return
    fi
    case "$DISTRO" in
        debian)
            DEBIAN_FRONTEND=noninteractive apt-get update -q
            ;;
    esac
    if test -n "$buildRequiredPackageLists_persistent"; then
        PACKAGES_PERSISTENT="$(expandPackagesToBeInstalled $buildRequiredPackageLists_persistent)"
        if test -s "$IPE_ERRFLAG_FILE"; then
            exit 1
        fi
    fi
    if test -n "$buildRequiredPackageLists_volatile"; then
        buildRequiredPackageLists_packages="$(expandPackagesToBeInstalled $buildRequiredPackageLists_volatile)"
        if test -s "$IPE_ERRFLAG_FILE"; then
            exit 1
        fi
        resetIFS
        for buildRequiredPackageLists_package in $buildRequiredPackageLists_packages; do
            if ! stringInList "$buildRequiredPackageLists_package" "$PACKAGES_PERSISTENT"; then
                PACKAGES_VOLATILE="$PACKAGES_VOLATILE $buildRequiredPackageLists_package"
            fi
        done
        PACKAGES_VOLATILE="${PACKAGES_VOLATILE# }"
    fi
    if test -n "$PACKAGES_PERSISTENT$PACKAGES_VOLATILE"; then
        case "$DISTRO" in
            debian)
                PACKAGES_PREVIOUS="$(dpkg --get-selections | grep -E '\sinstall$' | awk '{ print $1 }')"
                ;;
        esac
    fi
}

# Get the full list of APT/APK packages that will be installed, given the required packages
#
# Arguments:
#   $1: the list of required APT/APK packages
#
# Output:
#   Space-separated list of every APT/APK packages that will be installed
expandPackagesToBeInstalled() {
    expandPackagesToBeInstalled_result=''
    case "$DISTRO" in
        alpine)
            expandPackagesToBeInstalled_log="$(apk add --simulate $@ 2>&1 || printf '\nERROR: apk failed\n')"
            if test -n "$(printf '%s' "$expandPackagesToBeInstalled_log" | grep -E '^ERROR:')"; then
                printf 'FAILED TO LIST THE WHOLE PACKAGE LIST FOR\n' >&2
                printf '%s ' "$@" >&2
                printf '\n\nCOMMAND OUTPUT:\n%s\n' "$expandPackagesToBeInstalled_log" >&2
                echo 'y' >"$IPE_ERRFLAG_FILE"
                exit 1
            fi
            IFS='
'
            for expandPackagesToBeInstalled_line in $expandPackagesToBeInstalled_log; do
                if test -n "$(printf '%s' "$expandPackagesToBeInstalled_line" | grep -E '^\([0-9]*/[0-9]*) Installing ')"; then
                    expandPackagesToBeInstalled_result="$expandPackagesToBeInstalled_result $(printf '%s' "$expandPackagesToBeInstalled_line" | cut -d ' ' -f 3)"
                fi
            done
            resetIFS
            ;;
        debian)
            expandPackagesToBeInstalled_log="$(DEBIAN_FRONTEND=noninteractive apt-get install -sy $@ 2>&1 || printf '\nE: apt-get failed\n')"
            if test -n "$(printf '%s' "$expandPackagesToBeInstalled_log" | grep -E '^E:')"; then
                printf 'FAILED TO LIST THE WHOLE PACKAGE LIST FOR\n' >&2
                printf '%s ' "$@" >&2
                printf '\n\nCOMMAND OUTPUT:\n%s\n' "$expandPackagesToBeInstalled_log" >&2
                echo 'y' >"$IPE_ERRFLAG_FILE"
                exit 1
            fi
            expandPackagesToBeInstalled_inNewPackages=0
            IFS='
'
            for expandPackagesToBeInstalled_line in $expandPackagesToBeInstalled_log; do
                if test $expandPackagesToBeInstalled_inNewPackages -eq 0; then
                    if test "$expandPackagesToBeInstalled_line" = 'The following NEW packages will be installed:'; then
                        expandPackagesToBeInstalled_inNewPackages=1
                    fi
                elif test "$expandPackagesToBeInstalled_line" = "${expandPackagesToBeInstalled_line# }"; then
                    break
                else
                    resetIFS
                    for expandPackagesToBeInstalled_newPackage in $expandPackagesToBeInstalled_line; do
                        expandPackagesToBeInstalled_result="$expandPackagesToBeInstalled_result $expandPackagesToBeInstalled_newPackage"
                    done
                    IFS='
'
                fi
            done
            resetIFS
            ;;
    esac
    printf '%s' "${expandPackagesToBeInstalled_result# }"
}

# Install the required APT/APK packages
#
# Arguments:
#   $@: the list of APT/APK packages to be installed
installRequiredPackages() {
    printf '### INSTALLING REQUIRED PACKAGES ###\n'
    printf '# Packages to be kept after installation: %s\n' "$PACKAGES_PERSISTENT"
    printf '# Packages to be used only for installation: %s\n' "$PACKAGES_VOLATILE"

    case "$DISTRO" in
        alpine)
            apk add $PACKAGES_PERSISTENT $PACKAGES_VOLATILE
            ;;
        debian)
            DEBIAN_FRONTEND=noninteractive apt-get install -qq -y $PACKAGES_PERSISTENT $PACKAGES_VOLATILE
            ;;
    esac
}

# Get the version of an installed APT/APK package
#
# Arguments:
#   $1: the name of the installed package
#
# Output:
#   The numeric part of the package version, with from 1 to 3 numbers
#
# Example:
#   1
#   1.2
#   1.2.3
getInstalledPackageVersion() {
    case "$DISTRO" in
        alpine)
            apk info "$1" | head -n1 | cut -c $((${#1} + 2))- | grep -o -E '^[0-9]+(\.[0-9]+){0,2}'
            ;;
        debian)
            dpkg-query --showformat='${Version}' --show "$1" 2>/dev/null | grep -o -E '^[0-9]+(\.[0-9]+){0,2}'
            ;;
    esac
}

# Compare two versions
#
# Arguments:
#   $1: the first version
#   $2: the second version
#
# Output
#  -1 if $1 is less than $2
#  0 if $1 is the same as $2
#  1 if $1 is greater than $2
compareVersions() {
    compareVersions_v1="$1.0.0"
    compareVersions_v2="$2.0.0"
    compareVersions_vMin="$(printf '%s\n%s' "$compareVersions_v1" "$compareVersions_v2" | sort -t '.' -n -k1,1 -k2,2 -k3,3 | head -n 1)"
    if test "$compareVersions_vMin" != "$compareVersions_v1"; then
        echo '1'
    elif test "$compareVersions_vMin" = "$compareVersions_v2"; then
        echo '0'
    else
        echo '-1'
    fi
}

# Install a bundled PHP module given its handle
#
# Arguments:
#   $1: the numeric PHP Major-Minor version
#   $2: the handle of the PHP module
#
# Set:
#   UNNEEDED_PACKAGE_LINKS
#
# Output:
#   Nothing
installBundledModule() {
    printf '### INSTALLING BUNDLED MODULE %s ###\n' "$2"
    case "$2" in
        gd)
            if test $1 -le 506; then
                docker-php-ext-configure gd --with-gd --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --enable-gd-native-ttf --with-vpx-dir
            elif test $1 -le 701; then
                docker-php-ext-configure gd --with-gd --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --enable-gd-native-ttf --with-webp-dir
            elif test $1 -le 703; then
                docker-php-ext-configure gd --with-gd --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --with-webp-dir
            else
                docker-php-ext-configure gd --enable-gd --with-webp --with-jpeg --with-xpm --with-freetype
            fi
            ;;
        gmp)
            if test $1 -le 506; then
                if ! test -f /usr/include/gmp.h; then
                    ln -s /usr/include/x86_64-linux-gnu/gmp.h /usr/include/gmp.h
                    UNNEEDED_PACKAGE_LINKS="$UNNEEDED_PACKAGE_LINKS /usr/include/gmp.h"
                fi
            fi
            ;;
        imap)
            case "$DISTRO_VERSION" in
                debian@9)
                    installBundledModule_tmp="$(pwd)"
                    cd /tmp
                    apt-get download libc-client2007e-dev
                    dpkg -i --ignore-depends=libssl-dev libc-client2007e-dev*
                    rm libc-client2007e-dev*
                    cd "$installBundledModule_tmp"
                    ;;
            esac
            PHP_OPENSSL=yes docker-php-ext-configure imap --with-kerberos --with-imap-ssl
            ;;
        interbase | pdo_firebird)
            case "$DISTRO" in
                alpine)
                    if ! test -d /tmp/src/firebird; then
                        mv "$(getPackageSource https://github.com/FirebirdSQL/firebird/releases/download/R2_5_9/Firebird-2.5.9.27139-0.tar.bz2)" /tmp/src/firebird
                        cd /tmp/src/firebird
                        #Patch rwlock.h (this has been fixed in later release of firebird 3.x)
                        sed -i '194s/.*/#if 0/' src/common/classes/rwlock.h
                        ./configure --with-system-icu
                        # -j option can't be used: make targets must be compiled sequentially
                        make -s btyacc_binary gpre_boot libfbstatic libfbclient
                        cp gen/firebird/lib/libfbclient.so /usr/lib/
                        ln -s /usr/lib/libfbclient.so /usr/lib/libfbclient.so.2
                        cd - >/dev/null
                    fi
                    CFLAGS='-I/tmp/src/firebird/src/jrd -I/tmp/src/firebird/src/include -I/tmp/src/firebird/src/include/gen' docker-php-ext-configure $2
                    ;;
            esac
            ;;
        ldap)
            case "$DISTRO" in
                debian)
                    docker-php-ext-configure ldap --with-libdir=lib/$(gcc -dumpmachine)
                    ;;
            esac
            ;;
        mssql | pdo_dblib)
            if test $1 -le 704; then
                if ! test -f /usr/lib/libsybdb.so; then
                    ln -s /usr/lib/x86_64-linux-gnu/libsybdb.so /usr/lib/libsybdb.so
                    UNNEEDED_PACKAGE_LINKS="$UNNEEDED_PACKAGE_LINKS /usr/lib/libsybdb.so"
                fi
            fi
            ;;
        odbc)
            if test $1 -le 704; then
                docker-php-source extract
                cd /usr/src/php/ext/odbc
                phpize
                sed -ri 's@^ *test +"\$PHP_.*" *= *"no" *&& *PHP_.*=yes *$@#&@g' configure
                ./configure --with-unixODBC=shared,/usr
                cd - >/dev/null
            fi
            ;;
        pdo_odbc)
            docker-php-ext-configure pdo_odbc --with-pdo-odbc=unixODBC,/usr
            ;;
        snmp)
            case "$DISTRO" in
                alpine)
                    mkdir -p -m 0755 /var/lib/net-snmp/mib_indexes
                    ;;
            esac
            ;;
        sybase_ct)
            docker-php-ext-configure sybase_ct --with-sybase-ct=/usr
            ;;
        tidy)
            case "$DISTRO" in
                alpine)
                    if ! test -f /usr/include/buffio.h; then
                        ln -s /usr/include/tidybuffio.h /usr/include/buffio.h
                        UNNEEDED_PACKAGE_LINKS="$UNNEEDED_PACKAGE_LINKS /usr/include/buffio.h"
                    fi
                    ;;
            esac
            ;;
        zip)
            if test $1 -le 505; then
                docker-php-ext-configure zip
            elif test $1 -le 703; then
                docker-php-ext-configure zip --with-libzip
            else
                docker-php-ext-configure zip --with-zip
            fi
            ;;
    esac
    docker-php-ext-install -j$(nproc) "$2"
    case "$2" in
        imap)
            case "$DISTRO_VERSION" in
                debian@9)
                    dpkg -r libc-client2007e-dev
                    ;;
            esac
            ;;
    esac
}

# Fetch a tar.gz file, extract it and returns the path of the extracted folder.
#
# Arguments:
#   $1: the URL of the file to be downloaded
#
# Output:
#   The path of the extracted directory
getPackageSource() {
    mkdir -p /tmp/src
    getPackageSource_tempFile=$(mktemp -p /tmp/src)
    curl -L -s -S -o "$getPackageSource_tempFile" "$1"
    getPackageSource_tempDir=$(mktemp -p /tmp/src -d)
    cd "$getPackageSource_tempDir"
    tar -xzf "$getPackageSource_tempFile" 2>/dev/null || tar -xf "$getPackageSource_tempFile"
    cd - >/dev/null
    unlink "$getPackageSource_tempFile"
    getPackageSource_outDir=''
    for getPackageSource_i in $(ls "$getPackageSource_tempDir"); do
        if test -n "$getPackageSource_outDir" || test -f "$getPackageSource_tempDir/$getPackageSource_i"; then
            getPackageSource_outDir=''
            break
        fi
        getPackageSource_outDir="$getPackageSource_tempDir/$getPackageSource_i"
    done
    if test -n "$getPackageSource_outDir"; then
        printf '%s' "$getPackageSource_outDir"
    else
        printf '%s' "$getPackageSource_tempDir"
    fi
}

# Install a PHP module given its handle from source code
#
# Arguments:
#   $1: the handle of the PHP module
#   $2: the URL of the module source code
#   $3: the options of the configure command
#   $4: the value of CFLAGS
installModuleFromSource() {
    printf '### INSTALLING MODULE %s FROM SOURCE CODE ###\n' "$1"
    installModuleFromSource_dir="$(getPackageSource "$2")"
    case "$1" in
        snuffleupagus)
            cd "$installModuleFromSource_dir/src"
            ;;
        *)
            cd "$installModuleFromSource_dir"
            ;;
    esac
    phpize
    ./configure $3 CFLAGS="${4:-}"
    make -j$(nproc) install
    cd - >/dev/null
    docker-php-ext-enable "$1"
    case "$1" in
        snuffleupagus)
            cp -a "$installModuleFromSource_dir/config/default.rules" "$PHP_INI_DIR/conf.d/snuffleupagus.rules"
            printf 'sp.configuration_file=%s\n' "$PHP_INI_DIR/conf.d/snuffleupagus.rules" >>"$PHP_INI_DIR/conf.d/docker-php-ext-snuffleupagus.ini"
            ;;
    esac
}

# Install a PECL PHP module given its handle
#
# Arguments:
#   $1: the numeric PHP Major-Minor version
#   $2: the handle of the PHP module
installPECLModule() {
    printf '### INSTALLING PECL MODULE %s ###\n' "$2"
    installPECLModule_actual="$2"
    installPECLModule_stdin='\n'
    installPECLModule_manuallyInstalled=0
    case "$2" in
        amqp)
            case "$DISTRO_VERSION" in
                debian@8)
                    # in Debian Jessie we have librammitmq version 0.5.2
                    installPECLModule_actual="$2-1.9.3"
                    ;;
            esac
            ;;
        apcu)
            if test $1 -le 506; then
                installPECLModule_actual="$2-4.0.11"
            fi
            ;;
        decimal)
            case "$DISTRO" in
                alpine)
                    installPECLModule_src="$(getPackageSource https://codeload.github.com/bematech/libmpdec/tar.gz/master)"
                    cd -- "$installPECLModule_src"
                    ./configure CFLAGS='-w'
                    make -j$(nproc)
                    make install
                    cd - >/dev/null
                    ;;
            esac
            ;;
        gmagick)
            if test $1 -le 506; then
                installPECLModule_actual="$2-1.1.7RC3"
            else
                installPECLModule_actual="$2-beta"
            fi
            ;;
        http)
            if test $1 -le 506; then
                installPECLModule_actual="pecl_http-2.6.0"
            else
                installPECLModule_actual="pecl_http"
                if ! test -e /usr/local/lib/libidnkit.so; then
                    installPECLModule_src="$(getPackageSource https://jprs.co.jp/idn/idnkit-2.3.tar.bz2)"
                    cd -- "$installPECLModule_src"
                    ./configure
                    make -j$(nproc) install
                    cd - >/dev/null
                fi
            fi
            ;;
        memcache)
            if test $1 -lt 700; then
                installPECLModule_actual="$2-2.2.7"
            fi
            ;;
        mailparse)
            if test $1 -lt 700; then
                installPECLModule_actual="$2-2.1.6"
            fi
            ;;
        memcached)
            if test $1 -lt 700; then
                installPECLModule_actual="$2-2.2.0"
                # --with-libmemcached-dir (default: no)      Set the path to libmemcached install prefix
            else
                installPECLModule_stdin=''
                # --with-libmemcached-dir (default: no)      Set the path to libmemcached install prefix
                installPECLModule_stdin="${installPECLModule_stdin}\n"
                # --with-zlib-dir (default: no)              Set the path to ZLIB install prefix
                installPECLModule_stdin="${installPECLModule_stdin}\n"
                # --with-system-fastlz (default: no)         Use system FastLZ library
                installPECLModule_stdin="${installPECLModule_stdin}no\n"
                # --enable-memcached-igbinary (default: no)  Enable memcached igbinary serializer support
                php --ri igbinary >/dev/null 2>/dev/null && installPECLModule_stdin="${installPECLModule_stdin}yes\n" || installPECLModule_stdin="${installPECLModule_stdin}no\n"
                # --enable-memcached-msgpack (default: no)   Enable memcached msgpack serializer support
                php --ri msgpack >/dev/null 2>/dev/null && installPECLModule_stdin="${installPECLModule_stdin}yes\n" || installPECLModule_stdin="${installPECLModule_stdin}no\n"
                # --enable-memcached-json (default: no)      Enable memcached json serializer support
                installPECLModule_stdin="${installPECLModule_stdin}yes\n"
                # --enable-memcached-protocol (default: no)  Enable memcached protocol support
                installPECLModule_stdin="${installPECLModule_stdin}no\n" # https://github.com/php-memcached-dev/php-memcached/issues/418#issuecomment-449587972
                # --enable-memcached-sasl (default: yes)     Enable memcached sasl support
                installPECLModule_stdin="${installPECLModule_stdin}yes\n"
                # --enable-memcached-session (default: yes)  Enable memcached session handler support
                installPECLModule_stdin="${installPECLModule_stdin}yes\n"
            fi
            ;;
        mongo)
            installPECLModule_stdin=''
            # --with-mongo-sasl (default: no)      Build with Cyrus SASL (MongoDB Enterprise Authentication) support?
            installPECLModule_stdin="${installPECLModule_stdin}yes\n"
            ;;
        mongodb)
            if test $1 -le 505; then
                installPECLModule_actual="$2-1.5.5"
            fi
            ;;
        msgpack)
            if test $1 -le 506; then
                installPECLModule_actual="$2-0.5.7"
            fi
            ;;
        oauth)
            if test $1 -le 506; then
                installPECLModule_actual="$2-1.2.3"
            fi
            ;;
        opencensus)
            if test $1 -le 702; then
                installPECLModule_actual="$2-alpha"
            else
                installPECLModule_manuallyInstalled=1
                installPECLModule_src="$(getPackageSource https://pecl.php.net/get/opencensus)"
                cd "$installPECLModule_src"/opencensus-*
                find . -name '*.c' -type f -exec sed -i 's/\bZVAL_DESTRUCTOR\b/zval_dtor/g' {} +
                phpize
                ./configure
                make install
                cd - >/dev/null
            fi
            ;;
        parallel)
            if test $1 -le 701; then
                installPECLModule_actual="$2-0.8.3"
            fi
            ;;
        pcov)
            if test $1 -lt 701; then
                installPECLModule_actual="$2-0.9.0"
            fi
            ;;
        pdo_sqlsrv | sqlsrv)
            # https://docs.microsoft.com/it-it/sql/connect/php/system-requirements-for-the-php-sql-driver?view=sql-server-2017
            if test $1 -le 700; then
                installPECLModule_actual="$2-5.3.0"
            elif test $1 -le 701; then
                installPECLModule_actual="$2-5.6.1"
            fi
            ;;
        propro)
            if test $1 -lt 700; then
                installPECLModule_actual="$2-1.0.2"
            fi
            ;;
        pthreads)
            if test $1 -lt 700; then
                installPECLModule_actual="$2-2.0.10"
            fi
            ;;
        raphf)
            if test $1 -lt 700; then
                installPECLModule_actual="$2-1.1.2"
            fi
            ;;
        rdkafka)
            if test $1 -le 505; then
                installPECLModule_actual="$2-3.0.5"
            else
                installPECLModule_tmp=
                case "$DISTRO" in
                    alpine)
                        installPECLModule_tmp='librdkafka'
                        ;;
                    debian)
                        installPECLModule_tmp='librdkafka*'
                        ;;
                esac
                if test -n "$installPECLModule_tmp"; then
                    installPECLModule_tmp="$(getInstalledPackageVersion "$installPECLModule_tmp")"
                    if test -n "$installPECLModule_tmp"; then
                        if test $(compareVersions "$installPECLModule_tmp" '0.11.0') -lt 0; then
                            installPECLModule_actual="$2-3.1.3"
                        fi
                    fi
                fi
            fi
            ;;
        redis)
            # enable igbinary serializer support?
            php --ri igbinary >/dev/null 2>/dev/null && installPECLModule_stdin='yes\n' || installPECLModule_stdin='no\n'
            # enable lzf compression support?
            installPECLModule_stdin="${installPECLModule_stdin}yes\n"
            if test $1 -le 506; then
                installPECLModule_actual="$2-4.3.0"
            else
                installPECLModule_machine=$(gcc -dumpmachine)
                if ! test -e /usr/include/zstd.h || ! test -e /usr/lib/libzstd.so -o -e "/usr/lib/$installPECLModule_machine/libzstd.so"; then
                    installPECLModule_zstdVersion=1.4.4
                    installPECLModule_zstdVersionMajor=$(echo $installPECLModule_zstdVersion | cut -d. -f1)
                    rm -rf /tmp/src/zstd
                    mv "$(getPackageSource https://github.com/facebook/zstd/releases/download/v1.4.4/zstd-$installPECLModule_zstdVersion.tar.gz)" /tmp/src/zstd
                    cd /tmp/src/zstd
                    make V=0 -j$(nproc) lib
                    cp -f lib/libzstd.so "/usr/lib/$installPECLModule_machine/libzstd.so.$installPECLModule_zstdVersion"
                    ln -sf "/usr/lib/$installPECLModule_machine/libzstd.so.$installPECLModule_zstdVersion" "/usr/lib/$installPECLModule_machine/libzstd.so.$installPECLModule_zstdVersionMajor"
                    ln -sf "/usr/lib/$installPECLModule_machine/libzstd.so.$installPECLModule_zstdVersion" "/usr/lib/$installPECLModule_machine/libzstd.so"
                    ln -sf /tmp/src/zstd/lib/zstd.h /usr/include/zstd.h
                    UNNEEDED_PACKAGE_LINKS="$UNNEEDED_PACKAGE_LINKS /usr/include/zstd.h"
                    cd - >/dev/null
                fi
                # enable zstd compression support?
                installPECLModule_stdin="${installPECLModule_stdin}yes\n"
            fi
            ;;
        solr)
            if test $1 -le 506; then
                installPECLModule_actual="$2-2.4.0"
            fi
            ;;
        ssh2)
            if test $1 -le 506; then
                installPECLModule_actual="$2-0.13"
            else
                # see https://bugs.php.net/bug.php?id=78560
                installPECLModule_actual='https://pecl.php.net/get/ssh2'
            fi
            ;;
        tdlib)
            if ! test -f /usr/lib/libphpcpp.so || ! test -f /usr/include/phpcpp.h; then
                if test $PHP_MAJMIN_VERSION -le 701; then
                    cd "$(getPackageSource https://codeload.github.com/CopernicaMarketingSoftware/PHP-CPP/tar.gz/v2.1.4)"
                elif test $PHP_MAJMIN_VERSION -le 703; then
                    cd "$(getPackageSource https://codeload.github.com/CopernicaMarketingSoftware/PHP-CPP/tar.gz/v2.2.0)"
                else
                    cd "$(getPackageSource https://codeload.github.com/CopernicaMarketingSoftware/PHP-CPP/tar.gz/444d1f90cf6b7f3cb5178fa0d0b5ab441b0389d0)"
                fi
                make -j$(nproc)
                make install
                cd - >/dev/null
            fi
            installPECLModule_tmp="$(mktemp -p /tmp/src -d)"
            git clone --depth=1 --recurse-submodules https://github.com/yaroslavche/phptdlib.git "$installPECLModule_tmp"
            mkdir "$installPECLModule_tmp/build"
            cd "$installPECLModule_tmp/build"
            cmake -D USE_SHARED_PHPCPP:BOOL=ON ..
            make
            make install
            rm "$PHP_INI_DIR/conf.d/tdlib.ini"
            installPECLModule_manuallyInstalled=1
            ;;
        uuid)
            if test $1 -le 506; then
                installPECLModule_actual="$2-1.0.5"
            fi
            ;;
        xdebug)
            if test $1 -le 500; then
                installPECLModule_actual="$2-2.0.5"
            elif test $1 -le 503; then
                installPECLModule_actual="$2-2.2.7"
            elif test $1 -le 504; then
                installPECLModule_actual="$2-2.4.1"
            elif test $1 -le 506; then
                installPECLModule_actual="$2-2.5.5"
            elif test $1 -le 700; then
                installPECLModule_actual="$2-2.6.1"
            fi
            ;;
        uopz)
            if test $1 -lt 700; then
                installPECLModule_actual="$2-2.0.7"
            elif test $1 -lt 701; then
                installPECLModule_actual="$2-5.0.2"
            fi
            ;;
        yaml)
            if test $1 -lt 700; then
                installPECLModule_actual="$2-1.3.1"
            elif test $1 -lt 701; then
                installPECLModule_actual="$2-2.0.4"
            fi
            ;;
    esac
    if test $installPECLModule_manuallyInstalled -eq 0; then
        if test "$2" != "$installPECLModule_actual"; then
            printf '  (installing version %s)\n' "$installPECLModule_actual"
        fi
        printf "$installPECLModule_stdin" | pecl install "$installPECLModule_actual"
    fi
    case "$2" in
        http)
            # http must be loaded after raphf and propro
            docker-php-ext-enable --ini-name "zzz-$2.ini" "$2"
            ;;
        *)
            docker-php-ext-enable "$2"
            ;;
    esac
}

# Check if a string is in a list of space-separated string
#
# Arguments:
#   $1: the string to be checked
#   $2: the string list
#
# Return:
#   0 (true): if the string is in the list
#   1 (false): if the string is not in the list
stringInList() {
    for stringInList_listItem in $2; do
        if test "$1" = "$stringInList_listItem"; then
            return 0
        fi
    done
    return 1
}

# Remove a word from a space-separated list
#
# Arguments:
#   $1: the word to be removed
#   $2: the string list
#
# Output:
#   The list without the word
removeStringFromList() {
    removeStringFromList_result=''
    for removeStringFromList_listItem in $2; do
        if test "$1" != "$removeStringFromList_listItem"; then
            if test -z "$removeStringFromList_result"; then
                removeStringFromList_result="$removeStringFromList_listItem"
            else
                removeStringFromList_result="$removeStringFromList_result $removeStringFromList_listItem"
            fi
        fi
    done
    printf '%s' "$removeStringFromList_result"
}

# Cleanup everything at the end of the execution
cleanup() {
    if test -n "$UNNEEDED_PACKAGE_LINKS"; then
        printf '### REMOVING UNNEEDED PACKAGE LINKS ###\n'
        for cleanup_link in $UNNEEDED_PACKAGE_LINKS; do
            if test -L "$cleanup_link"; then
                rm -f "$cleanup_link"
            fi
        done
    fi
    if test -n "$PACKAGES_VOLATILE"; then
        printf '### REMOVING UNNEEDED PACKAGES ###\n'
        case "$DISTRO" in
            alpine)
                apk del --purge $PACKAGES_VOLATILE
                ;;
            debian)
                DEBIAN_FRONTEND=noninteractive apt-get remove --purge -y $PACKAGES_VOLATILE
                ;;
        esac
    fi
    if test -n "$PACKAGES_PREVIOUS"; then
        case "$DISTRO" in
            debian)
                printf '### RESTORING PREVIOUSLY INSTALLED PACKAGES ###\n'
                DEBIAN_FRONTEND=noninteractive apt-get install --no-upgrade -qqy $PACKAGES_PREVIOUS
                ;;
        esac
    fi
    case "$DISTRO" in
        alpine)
            rm -rf /var/cache/apk/*
            ;;
        debian)
            rm -rf /var/lib/apt/lists/*
            ;;
    esac
    docker-php-source delete
    rm -rf /tmp/pear
    rm -rf /tmp/src
}

resetIFS
mkdir -p /tmp/src
IPE_ERRFLAG_FILE="$(mktemp -p /tmp/src)"
setDistro
setPHPMajorMinor
case "$PHP_MAJMIN_VERSION" in
    505 | 506 | 700 | 701 | 702 | 703 | 704) ;;
    *)
        printf "### ERROR: Unsupported PHP version: %s.%s ###\n" $((PHP_MAJMIN_VERSION / 100)) $((PHP_MAJMIN_VERSION % 100))
        ;;
esac
UNNEEDED_PACKAGE_LINKS=''
processCommandArguments "$@"

if test -z "$PHP_MODULES_TO_INSTALL"; then
    exit 0
fi

sortModulesToInstall

buildRequiredPackageLists $PHP_MAJMIN_VERSION $PHP_MODULES_TO_INSTALL
if test -n "$PACKAGES_PERSISTENT$PACKAGES_VOLATILE"; then
    installRequiredPackages
fi
docker-php-source extract
BUNDLED_MODULES="$(find /usr/src/php/ext -mindepth 2 -maxdepth 2 -type f -name 'config.m4' | xargs -n1 dirname | xargs -n1 basename | xargs)"
for PHP_MODULE_TO_INSTALL in $PHP_MODULES_TO_INSTALL; do
    if stringInList "$PHP_MODULE_TO_INSTALL" "$BUNDLED_MODULES"; then
        installBundledModule $PHP_MAJMIN_VERSION "$PHP_MODULE_TO_INSTALL"
    else
        MODULE_SOURCE=''
        MODULE_SOURCE_CONFIGOPTIONS=''
        MODULE_SOURCE_CFLAGS=''
        case "$PHP_MODULE_TO_INSTALL" in
            cmark)
                MODULE_SOURCE=https://github.com/krakjoe/cmark/archive/v1.0.0.tar.gz
                cd "$(getPackageSource https://github.com/commonmark/cmark/archive/0.28.3.tar.gz)"
                make install
                cd - >/dev/null
                MODULE_SOURCE_CONFIGOPTIONS=--with-cmark
                ;;
            igbinary)
                if test $PHP_MAJMIN_VERSION -lt 700; then
                    MODULE_SOURCE="https://github.com/igbinary/igbinary/archive/2.0.8.tar.gz"
                else
                    MODULE_SOURCE="https://github.com/igbinary/igbinary/archive/3.0.1.tar.gz"
                fi
                MODULE_SOURCE_CONFIGOPTIONS=--enable-igbinary
                MODULE_SOURCE_CFLAGS='-O2 -g'
                ;;
            snuffleupagus)
                MODULE_SOURCE="https://codeload.github.com/jvoisin/snuffleupagus/tar.gz/v0.5.0"
                MODULE_SOURCE_CONFIGOPTIONS=--enable-snuffleupagus
                ;;
        esac
        if test -n "$MODULE_SOURCE"; then
            installModuleFromSource "$PHP_MODULE_TO_INSTALL" "$MODULE_SOURCE" "$MODULE_SOURCE_CONFIGOPTIONS" "$MODULE_SOURCE_CFLAGS"
        else
            installPECLModule $PHP_MAJMIN_VERSION "$PHP_MODULE_TO_INSTALL"
        fi
    fi
done
cleanup